This is Dead Dog off God Bless You Amigo by the Felice Brothers.

The hammer-on bit looks like this for G, and just do the same for C, except for like with C

e | ---3-3-----3-3- | 
B | ---0-0-----0-0- | 
G | ---0-0-----0-0- | 
D | ---0-0-0-2-2-2- | 
A | ---2-0-------0- | 
E | -3-3-2-------0- | 

And in the outro, just add G3 to C, so it's C* = 032310 for that dissonance

G5      C5                   G5
my old friend came home to hide
G5      C5                   G5
my old friend came home to rest

E5         A5
no smiling faces
B5         C5
no sweet embraces
C5             D5            C5
my old friend came home to hide

G5    C5          G5
dead dog in the rain
G5    C5        G5
dead dog in a ditch

E5           A5
ain't got no bone
B5           C5
no long walk home
C5        D5      C5
dead dog in the rain

G5         C5                 G5
I used to hear your whistle whine
G5                                     C5                   G5
but you couldn't keep up and all that rust, it ended your ride

E5                  A5
no dimes for you to lay flat
B5                   C5
no john hardy laying your track
C5         D5         G5
I used to hear your whistle whine

    G5    F5 C5
but lord, I wouldn't mind
D5
fading, no
     G5       F5     C5
just have to go it all by
D5
myself
D5
myself

G5 F5 C5 C5 *
(ohs, has and mms)


Enjoy.